Samarra
…city was further developed under Caliph al-Mutawakkil, who sponsored the construction of lavish palace complexes, such as al-Mutawakkiliyya, and the Great Mosque of Samarra with its famous spiral minaret or Malwiya, built-in 847. For his son al-Mu'tazz he built the large palace Bulkuwara. The Nestorian patriarch Sargis…